自爆
zì​bào

to spontaneously detonate

自爆 zì​bào
to spontaneously detonate verb
to explode automatically or spontaneously, such as a device or chemical

这艘潜艇五分钟后会自爆。

zhè sōu qián​tǐng wǔ fēn​zhōng hòu huì zì​bào.

This submarine will self-destruct in five minutes.

to self-disclose
to voluntarily reveal personal secrets, private matters, or scandals
to blow oneself up
to intentionally detonate explosives carried on one's own person, as in a suicide attack